FULLY WELDED HEAT EXCHANGER

The HRSFUNKEBlock FPB and HRSFUNKEFlex FPF welded heat exchangers are the perfect solution when it comes to
high temperatures and aggressive media. These types of heat exchangers are used, for example, in heat recovery
or condensing processes in refineries, in the chemical and pharmaceutical industries and in a wide range of
other industries. Due to their compact design, with very large heat transfer surfaces, these types of heat
exchangers have extremely low space requirements and are also easy to service. The media used in the heat
exchange process are supplied and drained through nozzles installed on the covers (FPF) or by casing plates
(FPB). The media flows through the plate assembly in a cross flow / cross counter flow pattern, with heat
from the hotter medium being transferred to the cooler medium. On account of the turbulent thin layer flow
present, this heat transfer is substantially more effective than for other heat transfer models. Baffles
can also be employed to ensure that the media pass through the heat transfer process repeatedly.

DESIGN

The plates of the FPB Heat Exchangers are based on the proven technology of the HRSFUNKE FP-series. A cassette is made
of two corrugated heat exchanger plates which are assembled at an 180° angle to each other. Back to back these are laser
welded along the sealing groove provided for the gasket. The aggressive medium or the refrigerant runs through the
inlet aperture in this sealed flow channel between the plates. In the entry zone, the grooves of the plates have a
special pattern so that the medium can freely run into the cassette. On the outside, each cassette is fitted with
a gasket. When the critical medium passes from one cassette to the other, only two of the four ring gaskets at the
apertures come into contact with the medium.
These two ring gaskets are made from specially designed, highly resistant material. To ensure flawless sealing these
specially designed gaskets are twice as thick as conventional gaskets. Furthermore, in the entry zone of the medium
the profile of the gaskets are tapered onto the sealing ring and bridging piece. The flow gap of the less critical
medium between the single cassettes is sealed with application specific gaskets of a proven quality. The gaskets
are mounted with the completely reliable “T- Clip- System”. In the entry zone of each medium double welding seams
and double gaskets between the cassettes guarantee for a leak free operation without any danger of mixing of the media

HRSFUNKE FLEX FPF

DESIGN
The HRSFUNKEFlex is a welded plate heat exchanger with removable, sealed covers whose core consists of a welded plate
assembly. Like all parts that come into contact with the media, this core is made of stainless steel and, in contrast
to the standard casing, can be tailored to meet specific demands. The standardised design of the compact HRSFUNKEFlex
stands out thanks to its flat cover, its extremely efficient heat transfer and its high, specific heat surface
density m² / m³ of free space. A main feature of the FPF is also its ability to be easily cleaned. Using the
types of plates available for welded plate assemblies - tubular, chevron and dimple, the demands dictated by the
flow paths and properties of various media and applications can always be satisfied. Seals can be selected as
appropriate, based on their resistance against the media or temperature.

TECHNICAL DATA:

maximum permissible operating pressure 40 bar g

minimum permissible operating pressure - 1 bar g

maximum permissible operating temperature 600°C

minimum permissible operating temperature -40°C

Clients and Specifiers

HRSFUNKE are leaders in heat transfer technology and are committed to innovation,
quality, value and energy efficiency in the development and manufacture of our products.
We pride ourselves on giving our customers the best, efficient, high quality, cost
effective solutions to all their heat transfer requirements.